SOAP properties model defines a convention of how SOAP features and bindings can be described
in terms of properties and property values. This convention is sufficient to describe
the distributed states of feature and binding specifications mentioned in the SOAP 1.2
specifications:
Request-Response Message Exchange Pattern
Response Message Exchange Pattern
SOAP Web Method Feature
SOAP HTTP Binding
SOAP properties are abstractions that represent information used to exchange SOAP messages
between SOAP nodes. SOAP properties are also called message metadata.
